The ASTM E155 standard provides reference radiographs used to evaluate the severity of discontinuities in aluminum and magnesium castings. It is a critical tool for radiographic testing (RT), allowing inspectors to compare actual X-ray films against standardized "plates" to determine if a part meets specific quality requirements. ASTM E155 Porosity and Discontinuity Levels
For digital radiography (CR/DR), ASTM E2422 (Aluminum) or ASTM E2869 (Magnesium) digital reference images must be used instead of the physical plates. David Publishing acceptance criteria
To perform an inspection, a full set of entity plates (actual physical radiographs) must be purchased from ASTM International for visual comparison. Digital Standards: astm e155 porosity levels pdf repack
Place your production X-ray film (or digital radiograph) side-by-side with the PDF reference image on a calibrated NDT viewer. Match porosity type:
ASTM E155 – officially titled "Standard Reference Radiographs for Inspection of Aluminum and Magnesium Castings" – is not just a text document. It is a combination of a written standard and a set of actual radiographs (or digital images) showing graded discontinuities. The ASTM E155 standard provides reference radiographs used
| Feature | Standard PDF | Repacked PDF | |---------|--------------|--------------| | Searchable text | ❌ Often not | ✅ Yes (OCR applied) | | Bookmarked sections | ❌ Rarely | ✅ Porosity levels bookmarked | | High-contrast images | ❌ Scans degrade quality | ✅ Digitally enhanced radiographs | | Thickness correction table | ❌ Missing | ✅ Embedded as Appendix A | | Printer-friendly layout | ❌ 200 pages of fluff | ✅ Condensed to 15 essential pages |
Shrinkage Cavity: Voids formed during solidification, often appearing more irregular than gas holes. Severity Levels for Shrinkage:
Severity Levels for Shrinkage: